package cn.tedu.filter;


import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter("*.do")
public class LoginFilter implements Filter {


    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        String url = ((HttpServletRequest)request).getRequestURI();
        url = url.substring(url.lastIndexOf("/"),url.lastIndexOf("."));
        if("/login".equals(url)){
            chain.doFilter(request,response);
        }else{
            ((HttpServletResponse)response).sendRedirect("login.jsp");
        }

    }

    @Override
    public void destroy() {

    }
}
